Anybody try these yet? Specifically, I'm wondering if there will work in close proximity, as in 4 of them on an Asus Z87-WS, maybe in a Lian Li PC-D8000 with two LEPA 1600? Or do they need more space between each card?

I purchased a R9 295X2 last week.
I tested one MD5 hash with oclHashcat-1.20(redhat linux)
It seems that 2 x 290x performance, max 73 Celsius because of water cooling
I think water-cooled GPU is nice and last choice in hashcat users

(05-04-2014, 04:41 PM)inoo Wrote: I purchased a R9 295X2 last week.
I tested one MD5 hash with oclHashcat-1.20(redhat linux)
It seems that 2 x 290x performance, max 73 Celsius because of water cooling
I think water-cooled GPU is nice and last choice in hashcat users

Ok, The current version 1.20 of oclhashcat has some issues with 295x and powertune, you will need to use it without powertune. It will be fixed in a new beta.

As for the bench mark, it is (as it should be) exactly identical to 2* 290x

However, in multi GPU machine, the card may throttle when it gets too hot around 72C i think in theory, this is design by AMD.

In my case, i don't mind it, i went to this card for the cooling aspect.
I am running 5 GPU total so the card gets a bit warm from other cards.
However, i think the current driver isn't as good as it should. In real life, it seems to throttle around 68C, which is not good.

If you plan to run that card alone, you should have no problem.
However, to go full speed you will need powertune in the fixed version.